
The Mark of the Yeongnogwi
In the village near Gayasan National Park, and across online communities, a rumor had quietly spread for the past three years: six experienced hikers and two forest rangers had vanished without a trace in the rugged wilderness of the Baekdudaegan mountain range. Official reports always listed familiar causes like 'missing,' 'fall,' or 'disorientation.' But from the mouths of residents living in the shadow of the mountains, a different story emerged. Cruelly mutilated livestock carcasses were found in high-altitude pastures, low animal roars echoed from uninhabited valleys, and ancient warnings were whispered back and forth. It was the tale of the 'Yeongnogwi,' a man-eating monster with a cow's head.
Last fall, a blurry photograph posted on a local hiking club's bulletin board began to erode the authorities' denials. Believed to have been uploaded by a now-missing university student, the picture showed a dark, blunt silhouette of a beast with massive, twisted horns against a backdrop of a pine forest shrouded in thick morning fog. While often dismissed as a large deer or an overexposed bear, it sent shivers of uncanny familiarity down the spines of those who knew the old stories. The photo's timestamp was only a few hours before the student's last known contact. For someone like me, who chronicles inexplicable phenomena, the authorities' denials and the unsettling persistence of local accounts felt like an undeniable truth. I had to confirm that intangible truth for myself.
Armed with the last known coordinates of the controversial trail camera photo and an unofficial satellite map of ancient animal paths, I followed a winding trail leading deep into the less-controlled areas of Gayasan National Park. The forest canopy was unusually dense, creating a green twilight even at midday, as if deep darkness had settled. The air was heavy and still, noticeably colder than the temperature I'd noted at the entrance. My feet sank deep into the thick, damp carpet of fallen leaves and soil, unnaturally muffling even my footsteps. It felt less like entering a forest and more like stepping into a vast, hushed chamber.
Following what appeared to be an old, abandoned hunter's trail, I found peculiar markings: deep scratch marks etched into old, massive trees. They were too high to be from bears and too irregular to be mere erosion. Some looked as if something enormous and solid had scraped against them. About a kilometer further, nestled in a dense rhododendron thicket near a dry stream bed, I found it. An abandoned hiking pole. Its distinctive red handle matched one I'd seen in the missing student's social media posts. It wasn't simply broken; the aluminum shaft was severely twisted, as if by an impossible rotational force.

The discovery of the pole intensified my growing unease. In the pervasive silence, my own breathing seemed incredibly loud. The faint cries of jays in the distance suddenly sounded unnervingly close, then vanished completely. As I listened, the forest itself seemed to hold its breath. The ceaseless hum of insects, the rustling of unseen creatures, all ceased, replaced by a deep, oppressive stillness.
I reached a small spring. The clear, cold water should have flowed downhill, yet in a particular hollow, the surface slowly, almost imperceptibly, swirled against the current with faint ripples. A dark vortex seemed to form, as if even light was being drawn into it. My compass needle swung erratically, then spun violently, finally stopping to point several degrees off my actual position.
The faint acrid smell was now distinct. A rank, beastly odor, like damp fur mixed with metal. With every step, it grew stronger, rasping in my throat. I saw more broken branches, snapped cleanly from their main trunks as if by an impossible force. My shadow, cast by the dimly filtered light, seemed momentarily to stretch and contract, which I tried to rationalize as an optical illusion of my eyes adjusting to the gloom. But I felt a sticky, primal gaze, the intense stare of a predator, settle like a cold weight on my shoulders. Despite my movement as I walked, the air temperature dropped sharply, turning my breath into visible vapor.
The increasingly pungent odor led me to a small, enclosed clearing. In its center, a large circular patch of ground was flattened, as if something of immense weight had rested there for a long time. Beside it was the source of the metallic stench: the partially remaining carcass of a deer. It hadn't been neatly consumed; it was brutally torn. Bones were shattered, flesh ripped with incredible force. This was not a predator; it was a destroyer.

Suddenly, from the dense trees directly behind me, a roar erupted that seemed to shake the very earth. It wasn't just a sound; it was a physical force, a deep, resonant shockwave. It slammed into my chest, stealing the air from my lungs and making the very ground beneath my feet violently vibrate. I stumbled, trying desperately to flee, but the forest seemed to impede me. The ground was no longer soft earth; it subtly undulated powerfully like a taut membrane, making it impossible to find purchase. I fell, my camera slipping from my grasp and flying away.
A colossal shadow detached itself from the impenetrable thicket. It was impossibly vast and dense, a void that absorbed all surrounding light. It moved with fluid, terrifying grace. Vaguely bovine in form, a grotesquely elongated, twisted head turned towards me. Two enormous, contorted horns caught the faint, humid light, but revealed only deeper darkness without reflection. Where eyes should have been, there were only lightless abyssal holes.
A sudden, chilling pressure tightened around my right ankle. Not a physical hand, but an invisible force of restraint. It felt like being crushed under a massive boulder. My leg twisted violently, and a searing pain shot up my spine. I desperately clawed at the ground, trying to break free, but the invisible force held me immobile. The air around me grew impossibly heavy, suffocatingly crushing. The ground began to sink beneath my feet. A localized depression formed, as if gravity itself was concentrated solely on me.
The creature took one slow, deliberate step. Its presence sucked all warmth from the air. The stench was now overwhelming, metallically nauseating. Not a roar, but a low, resonant growl erupted from it. It felt less like a sound and more like a pressure applied directly to my eardrums. My entire skull seemed to vibrate. I felt the invisible force on my ankle pulling hard. I managed to snatch up my camera, and knowing it was a desperate, futile act, tried to fire the flash. The camera flash flickered, illuminating only blurred darkness, then died.
I was slowly, inexorably being dragged towards the colossal, shadowy form. The ground continued to sink. I clawed at the earth, feeling roots snap beneath my fingers, but the pulling force was too strong. A faint, eerie 'snap', a horrifying rupture, filled the chilling silence from my ankle. I screamed, but the sound was swallowed by the oppressive, crushing air. My vision narrowed, and the last thing I saw before losing consciousness were the creature's two obsidian-like eye sockets, growing closer, consuming everything.

Fragments of the escape are remembered like a fever dream: extreme pain, absolute cold, and profound despair. I must have lost consciousness. Rescue teams found me three days later, delirious, miles from my last known coordinates. My ankle was severely broken, and my body was covered in deep bruises. All my gear was gone, but my broken cell phone and camera's memory card remained. The memory card, of course, was blank. Official reports cited a fall, hypothermia, and an animal attack (deep, irregular marks on my arm and back, presumed to be from a bear, marks no known animal could make).
I still feel a constant, phantom limb-like pressure in my chest. A memory of the air being squeezed from my lungs. My dreams are often filled with a resonant, bone-shaking hum. I can no longer bring myself to look at the blurred trail camera photo. I am afraid of feeling the absolute cold of that clearing again.
But the most unsettling evidence is not on a device; it is etched into my very flesh. Where the invisible grip held my ankle, a strange, almost perfectly circular scar remains, even after months of treatment. It's not a raised scar like normal ones, but a permanent, unnatural indentation, deeply recessed into the skin and bone. Too precise and uniform to be a mere wound. It is the trace of an inexplicable force, a mark of remembrance.
I have ceased my public inquiries into the Baekdudaegan disappearances. The old tales of the Yeongnogwi are no longer mere cautionary folklore; they are a warning imprinted in every cell of my being. And sometimes, late at night, when the wind howls a certain way under the eaves, I hear that deep, impossible roar. Not from the distant mountains, but from somewhere inside me, vibrating through my marrow, a lingering echo of an inexplicable world, reminding me of what I saw, or rather, what saw me. The world believes I had an accident. I know the truth.

[ CLASSIFIED VERDICT ]
[ACCESS LOG - SOURCE FILE]
This story is based on the 'Yeongnogwi' legend, passed down in the deep mountains of the Baekdudaegan mountain range. The Yeongnogwi is a human-eating monster with a cow-shaped head, a creature of terror among local residents, associated with the mysterious disappearances of experienced hikers and forest rangers.